Desk-lid support.



No. 865,481. PATENTED SEPT. 10, 1907.

R. E. DECKS & J. O. BRENNAN.

DESK LID SUPPORT.

APPLICATION FILED FEB. 11, 1907.

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UNITED OFFICE.

ROBERT E. DECKS, OF NEW YORK, AND JOHN O. DRENNAN, OF SYRACUSE, NEWYORK.

DESK-LID SUPPORT.

Specification of Letters Patent.

Patented Sept. 10, 1907.

Application filed February 11,1907. Serial No. 356,835.

To all whom it may concern:

Be it known that we, ROBERT E. Deans and JonN O. DRENNAN, of New Yorkcity and Syracuse, in the coun ties of New York and Onondaga, in theState of New York, have invented new and useful Improvements in Desk-LidSupports, of which the following, taken in connection with theaccompanying drawings, is a full, clear, and exact description.

This invention relates to certain improvements in desk lid supportscomprising a hinge and flexing connections attached to the hingesections at opposite sides of the pintle and bridging the interveningspace to form a truss for relieving the strain upon the pintle andadjoining ends of the hinge sections when the lid is open so that .thelid will be capable of supporting heavier loads than would be possiblewithout the use of the truss.

My object is to provide a symmetrical and reversible trussed hingeconnection between the shelf and lid of a desk or similar device inwhich a lid is used and at the same time to enable the parts to bequickly and eco nomically manufactured and assembled and easily appliedto any desk having a folding lid without excessive mutilation of theparts of the desk to which the trussed hinge is secured.

Other objects and uses relating to the specific parts of the device willbe brought out in the following description.-

1n the drawings,Figure 1 is a perspective view of a portion of a deskand its lid showing the application of one of my trussed hinges thereto,the members being shown in their open position. Fig. 2 is a perspectiveview of the detached truss-hinge seen in Fig. 1 also in its openposition. Fig. 3 is a perspective view of the same truss hinge in itsfolded or closed position and Fig. 4 is a side elevation of the samedevice shown in full lines in its folded position and by dotted lines inits open position.

This trussed hinge comprises essentially two similar leaves or hingesections -land 1, levers 2 and 2- and a link 3, one of the hingesections or leaves as 1 being adapted to be secured by suitablefastening means as screws 4 to the shelf as 5 of a desk having a foldinglid 6 to which the other hinge section as 1 is secured by suitablefastening means as screws '7. These hinge sections l and lare ofsubstantially the same form and size so that when hinged together attheir meeting ends by a pintle or hinge pin -S the hinge may be reversedor applied to either side of the desk thereby obviating the necessityfor providing right and left hinges. The meeting ends of these hingesections are formed with hollow bosses or cylinders, one of which isgrooved transversely to receive a tongue which is formed on the othersection, the pintle S- being passed through these tubular bosses topivot-ally lock the hinge sections together, said bosses being raisedfrom the plane of the main body of the hinge sections to form a bearingor limiting stop for the link 3 when the lid is swung to its full openposition as will be presently described.

The outer longitudinal edges of the hinge sections l and l are formedwith pendent lugs or ears 9- which are located some distance at oppositesides of and equi-distant from the pin 8 for receiving pivotal pins -10of the levers 2- and -2. These levers 2 and 2 are, therefore, pivoted atone end to their respective hinge sections 1 and 1- equi-distant fromthe hinge pin 8 and extend toward each other, their adjacent ends beingpivotally connected by pins l.lto the opposite ends of the link -3 thusforming what may be termed a double toggle connection between the hingesections 1.

The adjacent ends of the levers 2project toward each other some distancebeyond the pivots 11 forming shoulders 12 which are adapted to engageabutments 13 on the opposite ends of the link *3- between the pivots 1].and hinge pin *8 for limiting the relative movement of the adjacent endsof the levers 2 and link 3. These abutments 13 consist in this instanceof pins secured to the link 3 at equal distance from their pivots 11 andtherefore, equi-distant from the hinge pin 8 when the hinge is swung toits open position and operate to prevent the swinging of either of thepivots 11 below a direct line drawn between the pivots 10- when foldingand unfolding the hinge sections.

The hinge sections 1 and 1 from which the lugs 9- depend are formed withlaterally projecting shoulders 13 in the plane of movement of the lovers2 and -2 between their respective pivots ].0 and the hinge pin 8 formingadditional limiting stops for the levers and 2 when the hinge is open orrather when the lid is swung to its horizontal position therebytransmitting the downward strain on the lid from the pivot to the hingesections at opposite sides of the hinge pin, the link 3 being at thesame time engaged with the meeting end of one of the hinge sections.These levers 9 and 9 together with the link 3- form what may be termed atruss connection between the intermediate portions of the hinge sectionsto relieve strain upon the hinge pin and meeting ends of said hingesections. In other words, the downward strain upon the lid and hingesection secured thereto is transmitted from an intermediate point somedistance from the hinge pin of the hinge section 1 to the link 3 throughthe medium of the lever -2 which it will be seen bears upon the adjacentshoulder 13 between the pivots 10- and -1l so that the load or straindue to downward pressure upon the lid is borne almost entirely by theshoulders ]3 between the hinge pin 8 and pivots of the levers.

When the levers 2 and -2 are engaged with their respective shoulders-13, the central portion of the link 3 rests upon the tubular end of oneof the hinge sections, thereby transmitting but a very small part of theload upon the lid to the hinged ends of the hinge sections.

What I claim is:

1. A desk lid support comprising two similar hinge sections pivoted toeach other; levers pivoted to said section equi-distant from and atopposite sides of the hinge pin, a link pivotally connected to thelevers, a limiting stop on the hinge sections adapted to he engaged bysaid levers for limiting the down movement of. the hinge sections.

2. A desk lid support comprising a hinge having simi larly constructedleaves oi suhstantially the same form and size shoulders on said leaves,levers pivoted to said leaves at opposite sides of the swinging axis ofthe hinge sections and movable into and out of engagement: with saidshoulders as the hinge is opened and closed, and a link pivotallyconnected to the levers and movable therewith into and out of engagementwith the central portion of the hinge as one of the hinge sections isclosed and opened 3. A desk lid support comprising the opposite leavesof a hinge, said hinge having shoulders equi-distant from the swingingaxis of said leaves, levers pivoted at one end to their respectiveleaves equi-distant from the swinging axis of the hinge sections, and alink pivotally connected to the opposite ends of said levers 4. A desklid comprising two hinge sections pivoted to each other and providedwith shoulders equi-distant from and at opposite sides of the swingingaxis of the hinge, levers pivoted to their respective hinge sections, alink having its opposite ends pivoted to said levers, and stop pins onthe link adapted to he engaged by said levers for limiting the movementof the levers relatively to the link during the opening of the hinge.

in witness whereof we have hereunto set our hands this with day ofJanuary. 1007.

ROBERT E. DECKS. JOHN O. DRENNAN.

Witnesses ll. l Pinon, M. All Na'r'r.

